In reply to tmawer:
Most route setters use impact drivers. A quick google says that Aldi have a special on impact drivers at the moment if your budget is very limited. For a bit more (£100ish) you can pick up a basic driver.
After that Makita, DeWalt, bosch and Milwaukee are all decent. If I was choosing a new one if probably buy the Makita oil driven one because it's a bit quieter.